${30.}$ Lan said she would write him a letter.
${31.}$ They said they were going to the drugstore.
${32.}$ Lan said she went to the supermarket every day.
${33.}$ He said he had received the envelope.
${34.}$ They said they were going to visit Cannery Row.
${35.}$ She said she felt very sick.
${36.}$ Lan told Nam she bought some popcorn for her every morning.
${37.}$ They said they were flying to California.
${38.}$ Mr. Duong said he was cutting off the grass.
→ S + said/ told sb/ said to sb (that) + S + V(lùi thì): câu gián tiếp dạng trần thuật
* Một số thì của động từ lùi thì:
- HTĐ → QKĐ
- HTTD → QKTD
- HTHT → QKHT
- HTHTTD → QKHTTD
- QKĐ → QKHT
- QKTD → QKHTTD
- is/am/are going to → was/were going to
- can/ will/ shall/ may/ must + V0 → could/ would/ should/ might/ had to + V0